Effects of vitamin D supplementation and circuit training on indices of obesity and insulin resistance in T2D and vitamin D deficient elderly women.
J Exerc Nutrition Biochem. 2014 Sep;18(3):249-57. doi: 10.5717/jenb.2014.18.3.249. Epub 2014 Aug 26.
Kim HJ1, Kang CK1, Park H1, Lee MG1.
Elderly women, 25-40 minutes, Circuit training, 3 – 4 times per week for 12 weeks
|Circuit training|| Body weight, fat mass, percent body fat, and BMI decreased significantly |
TC, TG, HDL-C, and LDL-C showed improvements
|1200 IU of vitamin D helped by also lowering||Fasting glucose, fasting insulin, and HOMA-IR|
Was unable to navigate the Korean publisher website. PDF may be avaiable for free
This RCT was done in Korea, where there (currently) are not many obese people
Obese people would have needed 2-3X more vitamin D to get the same benefit
VitaminDWiki guesses more weight loss if both higher dose and loading dose were used
Loading dose would have also allowed increase in muscle strength during the RCT
See also VitaminDWiki
- Less weight gain by senior women if vitamin D levels over 30 ng – Kaiser Dec 2012
- Overview Diabetes and vitamin D contains the following summary
- Diabetes is 5X more frequent far from the equator
- Children getting 2,000 IU of vitamin D are 8X less likely to get Type 1 diabetes
- Obese people get less sun / Vitamin D - and also vitamin D gets lost in fat
- Sedentary people get less sun / Vitamin D
- Worldwide Diabetes increase has been concurrent with vitamin D decrease and air conditioning
- Elderly get 4X less vitamin D from the same amount of sun
Elderly also spend less time outdoors and have more clothes on
- All items in category Diabetes and Vitamin D
481 items: both Type 1 and Type 2
Vitamin D appears to both prevent and treat diabetes
- Appears that >2,000 IU will Prevent
- Appears that >4,000 IU will Treat , but not cure
- Appears that Calcium and Magnesium are needed for both Prevention and Treatment
- which are just some of the vitamin D cofactors
Number of articles in both categories of Diabetes and:
- Dark Skin
23 ; Intervention 52 ; Meta-analysis 34 ; Obesity 29 ; Pregnancy 40 ; T1 (child) 37 ; Omega-3 11 ; Vitamin D Receptor 21 ; Genetics 11 ; Magnesium 19 Click here to see details
- Overview Obesity and Vitamin D contains the following summary
- FACT: People who are obese have less vitamin D in their blood
- FACT: Obese need a higher dose of vitamin D to get to the same level of vit D
- FACT: When obese people lose weight the vitamin D level in their blood increases
- FACT: Adding Calcium, perhaps in the form of fortified milk, often reduces weight
- FACT: 153 trials for vitamin D intervention of obesity as of Sept 2020
- FACT: Less weight gain by senior women with > 30 ng of vitamin D
- FACT: Dieters lost additional 5 lbs if vitamin D supplementation got them above 32 ng - RCT
- FACT: Obese lost 3X more weight by adding $10 of Vitamin D
- FACT: Those with darker skins were more likely to be obese Sept 2014
- OBSERVATION: Many mammals had evolved to add fat and vitamin D in the autumn
- and lose both in the Spring - unfortunately humans have forgotten to lose the fat in the Spring
- SUGGESTION: Probably need more than 4,000 IU to lose weight if very low on vitamin D due to
risk factors such as overweight, age, dark skin, live far from equator,shut-in, etc.
- Obesity category has
See also web
- Vitamin D supplements and exercise: Are they required together to improve type 2 diabetes?
Vitamin D Council report on this study, Jan 2015
The purpose of this study was to investigate the effects of vitamin D supplementation and circuit training on body composition, abdominal fat, blood lipids, and insulin resistance in T2D and vitamin D deficient elderly women.
Fifty-two elderly women were randomly assigned to either the vitamin D supplementation with circuit training group (D+T: n = 15), the circuit training group (T: n = 13), the vitamin D supplementation group (D: n = 11), or the control group (CON: n = 13). The subjects in D took vitamin D supplements at 1,200 IU per day for 12 weeks; the subjects in T exercised 3 to 4 times per week, 25 to 40 minutes per session for 12 weeks; and the subjects in D+T participated in both treatments. Subjects in CON were asked to maintain normal daily life pattern for the duration of the study. Body composition, abdominal fat, blood lipids, and surrogate indices for insulin resistance were measured at pre- and post-test and the data were compared among the four groups and between two tests by utilizing two-way ANOVA with repeated measures. The main results of the present study were as follows:
1) Body weight, fat mass, percent body fat, and BMI decreased significantly in T, whereas there were no significant changes in the variables in D and CON. Lean body mass showed no significant changes in all groups. 2) TFA and SFA decreased significantly in T, whereas there were no significant changes in the variables in D and CON. The other abdominal fat related variables showed no significant changes in all groups. 3) TC, TG, HDL-C, and LDL-C showed improvements in T, whereas there were no significant changes in the variables in D and CON. 4) Fasting glucose, fasting insulin, and HOMA-IR tended to be lower in D+T.
It was concluded that the 12 weeks of vitamin D supplementation and circuit training would have positive effects on abdominal fat and blood lipid profiles in T2D and vitamin D deficient elderly women. Vitamin D supplementation was especially effective when it was complemented with exercise training.
PMID: 25566461T2 Diabetes helped by aerobic exercise, adding 1200 IU vitamin D helped even more – RCT Sept 2014
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